Siemens SENTRON 3WA1 Manual page 464

Technical specifications
6.2 Dimension drawings
Flange connection
The broken blue contour on the side corresponds to the 4-pole version.
All dimensions in [mm].
(1) Grooves (4 mm wide, 5 mm deep) for supporting phase barriers in the system
(5) Mounting holes
462
∅ 9 mm
Equipment Manual, 02/2023, 92310000002-06
3WA1 air circuit breaker